According to Bravo, the episode, which featured the ladies on a trip to South Africa, is only second to the season three finale, earning an estimated 4.95 million viewers.
Overall, the fourth season's ratings are up an average 10%.
And it isn't just the ladies of RHOA who are celebrating. Sunday's night's episode of the late night talk show, "Watch What Happens Live," featuring Kim Zolciak and Kroy Biermann, earned its highest ratings of the season at 1.6M viewers.
Next week promises to be as entertaining as last last week's episode. The Georgia peaches will go on safari and visit an orphanage.
Check out the sneak peek below: